Amanita flavorubens

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Amanita flavorubens
A. flavorubens3.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Amanitaceae
Genus: Amanita
Species:
A. flavorubens
Binomial name
Amanita flavorubens
E.-J. Gilbert (1941)
Synonyms
  • Agaricus flavorubens(Berk. & Mont.) Berk. & Mont. (1856)
  • Amplariella flavorubens(Berk. & Mont.) E.-J. Gilbert (1940)
Amanita flavorubens
Information icon.svg
Gills icon.png Gills on hymenium
Umbonate cap icon.svg Cap is umbonate
Free gills icon2.svg Hymenium is free
Volva stipe icon.svg Stipe has a volva
Transparent spore print icon.svg
Spore print is white
Mycorrhizal fungus.svgEcology is mycorrhizal

Amanita flavorubens, also known as the yellow American blusher or the yellow American blushing amanita, [1] is a species of fungus in the family Amanitaceae.

Contents

Description

The cap of is 3.5–10.5 centimetres (1+12–4 inches) wide, yellow to brassy yellow to lemon yellow, sometimes dark orange brown, sometimes with pigment entirely washed out by rain becoming pallid, sometimes very deep wine red in its entirety due to bruising during development, [2] subovoid to hemispheric to plano-convex to convex, depressed in the center, slightly tacky to dull to subviscid to subvelvety, with an incurved or downcurved, rimose, and nonstriate margin (may become slightly striate with age). It is adorned with conspicuous, woolly to felty, yellow warts; bald underneath the warts; the margin not lined, or only faintly lined at maturity. [3]

The volva is present as yellow to orange to bright orange-yellow flocculent to confluent warts, friable, sparsely and irregularly distributed, easily removable, pulverulent, splotchy brown around the center, yellow at the edge. The flesh is 3–7 millimetres (1814 in) thick over the stem, thinning evenly to the margin, white or yellowish, bright yellow just under the cap skin. The gills are free to very narrowly adnate, subcrowded to crowded, creamy ivory to cream to off-white, 3–8 mm broad, with a white pulverulent edge and also a small decurrent tooth. The short gills are truncate to subtruncate to subattenuate to attenuate to attenuate in steps, unevenly distributed, of diverse lengths, and plentiful. The stem is 5.2–15 cm × 0.7–1.4 cm, usually narrowing upward, infrequently narrowing downward, flaring at the top, yellow to white or very pale yellowish white and pruinose to finely powdery above the ring, white to yellow or occasionally with scattered yellowish surface fibrils and fibrillose below the ring, sometimes silky longitudinally striate.

The bulb is 15–25 × 15–21 mm, more or less turnip-shaped, with light red-pinkish stains; interior of the bulb is often the place where wine-red staining first appears intensely. The ring is membranous, superior, skirt-like, flaring then collapsing, pale yellowish white to cream to white, slightly more yellow underneath, with a thickened edge. The volva is absent or present as rings of yellow-brown warts on the bulb or brilliant yellow loose patches appressed to the stem and are large, friable, detersile, sometimes lost during collecting. The flesh is white or slightly pink, hollow or partially hollowed in the middle to stuffed.

The spores measure 7.8–11 × 5.4–7 μm and are ellipsoid to elongate (infrequently broadly ellipsoid) and amyloid. Clamps are not present at bases of basidia. [4]

Rain will quickly wash pigment away from the yellow-orange pileus. Bruising is sometimes reported only from the stem base for this species, but it commonly bruises throughout the fruiting body. Occasionally, especially in areas with dense root mats, specimens will be found in which the entire pileus is wine-colored from bruising during expansion through the root mat. A researcher has found one specimen with the cap intensely bruised before expansion. [4] The cap had a dark red brown color in the center and elsewhere ranged from brown to pale yellow brown at the cap margin. The cap warts were in concentric rings and somewhat concolorous with the surrounding cap skin, but always with a distinct yellow tint. The odor is of clean laundry.

Distribution and habitat

A. flavorubens was originally described from the U.S. state of Ohio, and is also known from forests associated with beech ( Fagus grandifolia ), oak (Quercus), pine (Pinus), birch (Betula), and Canadian hemlock ( Tsuga canadensis ) from south-eastern Canada to the state of Alabama in eastern North America, central Mexico, and south-eastern Arizona.

A. flavorubens is one of the few taxa in North America that are known to have a western population disjunct from an eastern primary area of distribution. [4]

Related Research Articles

<span class="mw-page-title-main">Blusher</span> Species of fungus

The blusher is the common name for several closely related species of the genus Amanita. A. rubescens, or the blushing amanita, is found in Europe and eastern North America, and A. novinupta, also known as the new bride blushing amanita, is found in western North America. Both their scientific and common names are derived from the propensity of their flesh to turn pink upon bruising or cutting.

<i>Amanita brunnescens</i> Species of fungus

Amanita brunnescens, also known as the brown American star-footed amanita or cleft-footed amanita is a native North American mushroom of the large genus Amanita. It differs from A. phalloides by its fragile volva and tendency to bruise brown.

<span class="mw-page-title-main">Amanita muscaria var. guessowii</span> Variety of fungi

Amanita chrysoblema yellow-orange variant, commonly known as the American yellow fly agaric, is a basidiomycete fungus of the genus Amanita. It is one of several varieties of muscaroid fungi, all commonly known as fly agarics or fly amanitas.

<i>Amanita persicina</i> Species of fungus

Amanita persicina, commonly known as the peach-colored fly agaric, is a basidiomycete fungus of the genus Amanita with a peach-colored center. Until c. 2015, the fungus was believed to be a variety of A. muscaria.

<i>Amanita daucipes</i> Species of fungus

Amanita daucipes is a species of fungus in the family Amanitaceae of the mushroom order Agaricales. Found exclusively in North America, the mushroom may be recognized in the field by the medium to large white caps with pale orange tints, and the dense covering of pale orange or reddish-brown powdery conical warts on the cap surface. The mushroom also has a characteristic large bulb at the base of its stem with a blunt short rooting base, whose shape is suggestive of the common names carrot-footed lepidella, carrot-foot amanita, or turnip-foot amanita. The mushroom has a strong odor that has been described variously as "sweet and nauseous", or compared to an old ham bone, or soap. Edibility is unknown for the species, but consumption is generally not recommended due its position in the Amanita subgroup Lepidella, which contains some poisonous members.

<i>Amanita aestivalis</i> Species of fungus

Amanita aestivalis, commonly known as the white American star-footed amanita, is a species of fungus in the mushroom family Amanitaceae. The cap of the white fruit body is 5 to 8.5 centimetres in diameter. It sits atop a stem that is 8.5 to 16 cm long. The entire fruit body will slowly stain a reddish-brown color in response to bruising. A. aestivalis may be a synonym for A. brunnescens, and may be confused with several other white-bodied amanitas. The fungus is distributed in eastern North America.

<i>Amanita exitialis</i> Species of fungus

Amanita exitialis, also known as the Guangzhou destroying angel, is a mushroom of the large genus Amanita. It is distributed in eastern Asia, and probably also in India where it has been misidentified as A. verna. Deadly poisonous, it is a member of section Phalloideae and related to the death cap A. phalloides. The fruit bodies (mushrooms) are white, small to medium-sized with caps up to 7 cm (2.8 in) in diameter, a somewhat friable ring and a firm volva. Unlike most agaric mushrooms which typically have four-spored basidia, the basidia of A. exitialis are almost entirely two-spored. Eight people were fatally poisoned in China after consuming the mushroom in 2000, and another 20 have been fatally poisoned since that incident. Molecular analysis shows that the species has a close phylogenetic relationship with three other toxic white Amanitas: A. subjunquillea var. alba, A. virosa and A. bisporigera.

<i>Amanita australis</i> Species of fungus

Amanita australis is a species of fungus in the family Amanitaceae. It produces small- to medium-sized fruit bodies, with brown caps up to 9 centimetres in diameter covered with pyramidal warts. The gills on the underside of the cap are white, closely crowded together, and free from attachment to the stem. The stem, up to 9 cm long, has a ring and a bulbous base. The mushroom may be confused with another endemic New Zealand species, A. nothofagi, but can be distinguished by differences in microscopic characteristics.

<i>Amanita nothofagi</i> Species of fungus

Amanita nothofagi is a species of fungus in the family Amanitaceae. Endemic to New Zealand, the species was first described by mycologist Greta Stevenson in 1962. The fruit bodies have dark brown caps that are up to 13 cm (5.1 in) in diameter and covered with patches of soft greyish-brown scales or warts. The gills underneath the cap are crowded together, free from attachment to the stem, and white, becoming tinged with yellow in age. The stem of the mushroom is 4–14 cm (1.6–5.5 in) long by 0.5–2.5 cm (0.2–1.0 in) thick, and has a ring. The spore print is white, and individual spores are spherical to ellipsoid, measuring 7.5–9 by 7.5–9 micrometres. The mushroom may be confused with another New Zealand species, A. australis, but can be distinguished by certain characteristics. Amanita nothofagi is a mycorrhizal species, and grows in association with native New Zealand trees such as Southern Beech.

<i>Amanita nehuta</i> Species of fungus

Amanita nehuta, also called Maori dust amanita, is a species of fungus in the family Amanitaceae.It has only a dark ring rather than a universal veil and white spores. Abundant in New Zealand, it can be found growing under Leptospermum and Nothofagus species.

<i>Amanita pekeoides</i> Species of fungus from New Zealand

Amanita pekeoides is a species of fungus in the family Amanitaceae. It is endemic to New Zealand.

<i>Amanita jacksonii</i> Species of fungus

Amanita jacksonii, also known as Jackson's slender amanita, American Slender Caesar, and Eastern Caesar's Amanita, is a North American species of fungus in the family Amanitaceae. It is a reddish-orange colored mushroom species which can be identified by its yellow gills, large, white, sacklike volva.

<i>Amanita atkinsoniana</i> Species of fungus

Amanita atkinsoniana, also known as the Atkinson's amanita, is a species of fungus in the family Amanitaceae. The fruit body is white to brownish, with caps up to 12.5 centimetres in diameter, and stems up to 20 cm long. The surface of the cap is covered with brownish conical warts.

<i>Amanita ravenelii</i> Species of fungus

Amanita ravenelii, commonly known as the pinecone lepidella, is a species of fungus in the family Amanitaceae. The whitish fruit bodies are medium to large, with caps up to 17 centimetres wide, and stems up to 25 cm (10 in) long. The cap surface has large warts and the stem has a scaly, bulbous base. The mushrooms have a unique chlorine like odor.

<i>Amanita rubrovolvata</i> Species of fungus

Amanita rubrovolvata, commonly known as the red volva amanita, is a species of fungus in the family Amanitaceae. The fungus produces small to medium-sized mushrooms, with reddish-orange caps up to 6.5 centimetres wide. The stems are up to 10 cm (4 in) tall, cream-coloured above the ring and cream to yellowish below it. The stem ends in a roughly spherical bulb at the base, which is covered with bright orange patches.

<i>Amanita albocreata</i> Species of fungus

Amanita albocreata, also called the ringless panther or the ringless panther amanita, is a species of fungus in the family Amanitaceae. It was discovered in 1944, by William Murrill. It is commonly found in the northeastern United States and parts of southeastern Canada. It normally grows between the rainy months of June and August.

<i>Amanita flavella</i> Species of fungus

Amanita flavella is a species of mycorrhizal fungus from family Amanitaceae. It has a convex lemon-yellow coloured cap up to 9 centimetres in diameter. They can also be yellowish-orange coloured and have crowded pale-yellow gills. The yellowish-white stipe is central and 9 cm tall; it is slightly bulbous, and enclosed into a volva. The yellowish-white ring is flared, ample, and membranous. The spores are 8.5–10 μm long and 6–6.5 μm wide, white, amyloid, and ellipsoid. The species is similar in appearance to A. flavoconia and A. flavipes.

<i>Amanita basii</i> Species of fungus

Amanita basii is a mushroom of the family Amanitaceae.

<i>Amanita spreta</i> Species of fungus

Amanita spreta or the hated amanita is an inedible species of the genus Amanita.

<i>Amanita crenulata</i> Toxic species of mushroom

Amanita crenulata, also known as the poison champagne amanita, is a species of fungus that is very common in the Northeast United States.

References

  1. "Standardized Common Names for Wild Species in Canada". National General Status Working Group. 2020.
  2. Coker 1917
  3. "Amanita flavorubens". MushroomExpert.com. Retrieved 2016-09-28.
  4. 1 2 3 "Amanita flavorubens". Amanitaceae.org. Retrieved 2016-09-28.

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